Program That Calculates Parking Fee

I succeed but with limit. the code is below. I cant use advanced material (really just the basics even without loops)

if statements are allowed, and i must use Final variables for key value.

I must use one class and one method (the main}|). I need to prompt the user for a entrance time and exit time, it must be with a space , like 18 00 and not 18:00

Also, if the entrance time is greater or equal to 18 00 the charge is always 20 dollars. If the user enters wrong data or out of range data an output of "ERROR WRONG DATA" and then the programs terminates. Same for wrong time . like if the enter hour is bigger than the exit hour an output of "ERROR entrance time must preccede exit"

for the first hour the output is "no charge",
for the second hour the charge is 10 dollars.
from the 3 hour for every 15 minutes an additional fee of 3 dollars.

for example if the user entered 10 00 and 13 20 , it should be 52 dollars

** it works for me but if the difference between the entered and exit hours is more then 3 it doesnt work. I could've added another if statements for the bigger hours but it will be very long.

I managed everything. except the last part. That calculates additional 3 dollar for each 15 minutes. what is did is.

converted everything to minutes.

subtract enter time from exit time.

and divide by 15.

thats give me the number of 15 minute periods.

if it last or equal to 4. no charge

else last or equal to 8 . 10 dollars

else...... here is the hard part.

if the total minutes wont divide even by 15 it wont work.